FF-P-2827A
3.5.3.2.5 Key serial numbers. The two keys for each padlock shall be
identified by the same serial number stamped on each key. The characters shall not
be less than 0.094 inch (2.38 mm) in height. The serial number shall not in any way
disclose the key bitting either directly or by commercially available or published
coding.
3.5.3.2.6
Operating keys. The operating keys shall lock and unlock the
padlock.
3.5.3.2.7 Master keys. Unless otherwise specified (see 6.2), two master keys
shall be supplied with each group or set of master keyed padlocks (see 6.2).
3.5.3.2.8 Keyed alike. When specified (see 6.2), any quantity of padlocks may
be ordered keyed alike.
3.5.4 Appurtenances, slides, or covers. Appurtenances, slides, or covers that
may be incorporated in the padlock shall be secure when the locking mechanism is in
both the locked and unlocked positions.
3.5.4.1 Keyway cover. Any keyway cover or plate shall remain aligned with the
keyway. There shall be no keyway cover or obstruction which requires any special
action or separate maneuver by the padlock user before a key can be inserted in the
keyway.
3.6 Lubrication and maintenance. An environmentally safe dry film lubricant
that does not attract foreign particulates shall be used. Lubrication and
maintenance shall be specified by the manufacturer, to meet requirements specified
herein.
3.7 Color and finish. The color of the padlock shall be the natural color of
the body material. All surfaces shall have a uniform finish of sufficient
smoothness to accept the required marking. The finish shall be determined by the
manufacturer in order to meet all environmental requirements specified herein.
3.8 Identification marking. The body of the padlock shall be marked with the
letters "US," the manufacturer's name, trademark or CAGE number, some traceable
model identification, the year of manufacture, and an alphanumeric serial to match
the key to a padlock(s) for accountability. The markings may be stamped, rolled,
cast, or applied in any other manner that will assure legibility after the padlock
has been exposed to the testing specified herein, with the exception of forced
entry.
3.8.1 Prohibited marking. There shall be no markings on the padlock exterior
which would aid in the unauthorized opening of the padlock.
3.9 Instructions. Operating and maintenance instructions shall be furnished
with each padlock as are normally furnished with such equipment for the commercial
market.
3.10 Workmanship. The padlock and keys shall be free from sharp edges, burrs,
and slivers that affect serviceability or appearance.
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